t = db.geo_s2index;
t.drop();

// We internally drop adjacent duplicate points in lines.
someline = { "type" : "LineString", "coordinates": [ [40,5], [40,5], [ 40, 5], [41, 6], [41,6]]};
t.insert( {geo : someline , nonGeo: "someline"});
t.ensureIndex({geo: "2dsphere"});
foo = t.find({geo: {$geoIntersects: {$geometry: {type: "Point", coordinates: [40,5]}}}}).next();
assert.eq(foo.geo, someline);
t.dropIndex({geo: "2dsphere"});

pointA = { "type" : "Point", "coordinates": [ 40, 5 ] };
t.insert( {geo : pointA , nonGeo: "pointA"});

pointD = { "type" : "Point", "coordinates": [ 41.001, 6.001 ] };
t.insert( {geo : pointD , nonGeo: "pointD"});

pointB = { "type" : "Point", "coordinates": [ 41, 6 ] };
t.insert( {geo : pointB , nonGeo: "pointB"});

pointC = { "type" : "Point", "coordinates": [ 41, 6 ] };
t.insert( {geo : pointC} );

// Add a point within the polygon but not on the border.  Don't want to be on
// the path of the polyline.
pointE = { "type" : "Point", "coordinates": [ 40.6, 5.4 ] };
t.insert( {geo : pointE} );

// Make sure we can index this without error.
t.insert({nonGeo: "noGeoField!"});

somepoly = { "type" : "Polygon",
             "coordinates" : [ [ [40,5], [40,6], [41,6], [41,5], [40,5]]]};
t.insert( {geo : somepoly, nonGeo: "somepoly" });

var res = t.ensureIndex( { geo : "2dsphere", nonGeo: 1 } );
// We have a point without any geo data.  Don't error.
assert.commandWorked(res);

res = t.find({ "geo" : { "$geoIntersects" : { "$geometry" : pointA} } });
assert.eq(res.itcount(), 3);

res = t.find({ "geo" : { "$geoIntersects" : { "$geometry" : pointB} } });
assert.eq(res.itcount(), 4);

res = t.find({ "geo" : { "$geoIntersects" : { "$geometry" : pointD} } });
assert.eq(res.itcount(), 1);

res = t.find({ "geo" : { "$geoIntersects" : { "$geometry" : someline} } });
assert.eq(res.itcount(), 5);

res = t.find({ "geo" : { "$geoIntersects" : { "$geometry" : somepoly} } });
assert.eq(res.itcount(), 6);

res = t.find({ "geo" : { "$within" : { "$geometry" : somepoly} } });
assert.eq(res.itcount(), 6);

res = t.find({ "geo" : { "$geoIntersects" : { "$geometry" : somepoly} } }).limit(1);
assert.eq(res.itcount(), 1);

res = t.find({ "nonGeo": "pointA",
               "geo" : { "$geoIntersects" : { "$geometry" : somepoly} } });
assert.eq(res.itcount(), 1);

// Don't crash mongod if we give it bad input.
t.drop();
t.ensureIndex({loc: "2dsphere", x:1});
t.save({loc: [0,0]});
assert.throws(function() { return t.count({loc: {$foo:[0,0]}}); });
assert.throws(function() { return t.find({ "nonGeo": "pointA",
                                           "geo" : { "$geoIntersects" : { "$geometry" : somepoly},
                                                     "$near": {"$geometry" : somepoly }}}).count();});

// If we specify a datum, it has to be valid (WGS84).
t.drop();
t.ensureIndex({loc: "2dsphere"});
res = t.insert({ loc: { type: 'Point',
                        coordinates: [40, 5],
                        crs: { type: 'name', properties: { name: 'EPSG:2000' }}}});
assert.writeError(res);
assert.eq(0, t.find().itcount());
res = t.insert({ loc: { type: 'Point', coordinates: [40, 5] }});
assert.writeOK(res);
res = t.insert({ loc: { type: 'Point',
                        coordinates: [40, 5],
                        crs: { type: 'name', properties: {name :'EPSG:4326' }}}});
assert.writeOK(res);
res = t.insert({ loc: { type:'Point',
                        coordinates: [40, 5],
                        crs: { type: 'name',
                               properties: { name: 'urn:ogc:def:crs:OGC:1.3:CRS84'}}}});
assert.writeOK(res);

// We can pass level parameters and we verify that they're valid.
// 0 <= coarsestIndexedLevel <= finestIndexedLevel <= 30.
t.drop();
t.save({loc: [0,0]});
res = t.ensureIndex({ loc: "2dsphere" }, { finestIndexedLevel: 17, coarsestIndexedLevel: 5 });
assert.commandWorked(res);
// Ensure the index actually works at a basic level
assert.neq(null,
    t.findOne({ loc : { $geoNear : { $geometry : { type: 'Point', coordinates: [0, 0] } } } }));

t.drop();
t.save({loc: [0,0]});
res = t.ensureIndex({ loc: "2dsphere" }, { finestIndexedLevel: 31, coarsestIndexedLevel: 5 });
assert.commandFailed(res);

t.drop();
t.save({loc: [0,0]});
res = t.ensureIndex({ loc: "2dsphere" }, { finestIndexedLevel: 30, coarsestIndexedLevel: 0 });
assert.commandWorked(res);
//Ensure the index actually works at a basic level
assert.neq(null,
    t.findOne({ loc : { $geoNear : { $geometry : { type: 'Point', coordinates: [0, 0] } } } }));

t.drop();
t.save({loc: [0,0]});
res = t.ensureIndex({ loc: "2dsphere" }, { finestIndexedLevel: 30, coarsestIndexedLevel: -1 });
assert.commandFailed(res);

// SERVER-21491 Verify that 2dsphere index options require correct types.
res = t.ensureIndex({ loc: '2dsphere' }, { '2dsphereIndexVersion': 'NOT_A_NUMBER' });
assert.commandFailed(res);

res = t.ensureIndex({ loc: '2dsphere' }, { finestIndexedLevel: 'NOT_A_NUMBER' });
assert.commandFailedWithCode(res, ErrorCodes.TypeMismatch);

res = t.ensureIndex({ loc: '2dsphere' }, { coarsestIndexedLevel: 'NOT_A_NUMBER' });
assert.commandFailedWithCode(res, ErrorCodes.TypeMismatch);

// Ensure polygon which previously triggered an assertion error in SERVER-19674
// is able to be indexed.
t.drop();
t.insert({
    loc: {
        "type" : "Polygon",
        "coordinates" : [
            [[-45, 0], [-44.875, 0], [-44.875, 0.125], [-45, 0.125], [-45,0]]
        ]
    }
});
res = t.createIndex({loc: "2dsphere"});
assert.commandWorked(res);